/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.client.cli.util;

import org.apache.flink.client.deployment.ClusterClientFactory;
import org.apache.flink.client.deployment.ClusterClientServiceLoader;
import org.apache.flink.client.program.ClusterClient;
import org.apache.flink.configuration.Configuration;

import java.util.stream.Stream;

import static org.apache.flink.util.Preconditions.checkNotNull;

/**
 * A test {@link ClusterClientServiceLoader} that returns always a {@link
 * DummyClusterClientFactory}.
 */
public class DummyClusterClientServiceLoader<ClusterID> implements ClusterClientServiceLoader {

    private final ClusterClient<ClusterID> clusterClient;

    public DummyClusterClientServiceLoader(final ClusterClient<ClusterID> clusterClient) {
        this.clusterClient = checkNotNull(clusterClient);
    }

    @Override
    public <C> ClusterClientFactory<C> getClusterClientFactory(final Configuration configuration) {
        checkNotNull(configuration);
        return new DummyClusterClientFactory<>(clusterClient);
    }

    @Override
    public Stream<String> getApplicationModeTargetNames() {
        return Stream.empty();
    }
}
